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Copper form two oxides .for the same amount of copper twice as much as oxygen was used to form the first than to form other.find the ratio of valencies

Copper form two oxides .for the same amount of copper twice as much as oxygen was used to form the first than to form other.find the ratio of valencies

Grade:11

1 Answers

Himanshu
103 Points
7 years ago
Copper form two oxides i.e. CuO and Cu2O.
First oxide – CuO
Molecular weight of copper = 63.5
Molecular weight of oxygen = 16
Here, 63.5 parts of copper reacts with 16 parts of oxygen.
 
Second oxide – Cu2O
Molecular weight of copper = 63.5 × 2 = 127
Molecular weight of oxygen = 16
Here, 63.5 parts of copper reacts with 8 parts of oxygen.
 
Hence, ratio of valencies of first copper oxide to other = 16:8
                                                                                    = 2:1
 

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